Imaging by THz single photon counting

Author

Ikushima, Kenji ; Komiyama, Susumu

Author_Institution

Dept. of Basic Sci., Tokyo Univ., Tokyo

fYear

2007

fDate

2-9 Sept. 2007

Firstpage

353

Lastpage

355

Abstract

THz photon-counting microscope is developed with quantum-dot single photon detectors. The photon detector is incorporated into a scanning confocal optical system which consists of aplanatic Si-hyperhemisphere lenses. A spatial resolution of 0.05 mm is achieved for a free space wavelength of 0.13 mm. We use the microscope to probe extremely weak inter-Landau level emission in quantum Hall effect devices, which uncovers nonequilibrium electrons generated by quantum electron transports.

Keywords

Landau levels; photon counting; quantum Hall effect; submillimetre wave imaging; Si-hyperhemisphere lenses; THz photon-counting microscope; Thz imaging; interLandau level emission; quantum Hall effect devices; quantum electron transports; quantum-dot single photon detectors; scanning confocal optical system; Detectors; Electron emission; Electron microscopy; Electron optics; Lenses; Optical imaging; Probes; Quantum dots; Spatial resolution; Stimulated emission; Microscopy; Quantum Hall effect; Quantum dots;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared and Millimeter Waves, 2007 and the 2007 15th International Conference on Terahertz Electronics. IRMMW-THz. Joint 32nd International Conference on

Conference_Location

Cardiff

Print_ISBN

978-1-4244-1438-3

Type

conf

DOI

10.1109/ICIMW.2007.4516530

Filename

4516530